/*
 * Copyright (c) 2014 Adobe Systems Incorporated. All rights reserved.
 *  
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 *  
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *  
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 * 
 */

define(function (require, exports, module) {
    "use strict";

    var util = require("adapter").util,
        OS = require("adapter").os,
        UI = require("adapter").ps.ui;

    var Tool = require("js/models/tool"),
        EventPolicy = require("js/models/eventpolicy"),
        KeyboardEventPolicy = EventPolicy.KeyboardEventPolicy,
        shortcutUtil = require("js/util/shortcuts"),
        nls = require("js/util/nls");

    /**
     * @implements {Tool}
     * @constructor
     */
    var PenTool = function () {
        Tool.call(this, "pen", nls.localize("strings.TOOLS.NAMES.PEN"), "penTool");

        var backspaceKeyPolicy = new KeyboardEventPolicy(UI.policyAction.PROPAGATE_TO_BROWSER,
                OS.eventKind.KEY_DOWN, null, OS.eventKeyCode.BACKSPACE),
            deleteKeyPolicy = new KeyboardEventPolicy(UI.policyAction.PROPAGATE_TO_BROWSER,
                OS.eventKind.KEY_DOWN, null, OS.eventKeyCode.DELETE),
            escapeKeyPolicy = new KeyboardEventPolicy(UI.policyAction.PROPAGATE_TO_BROWSER,
                OS.eventKind.KEY_DOWN, null, OS.eventKeyCode.ESCAPE),
            arrowUpKeyPolicy = new KeyboardEventPolicy(UI.policyAction.PROPAGATE_BY_FOCUS,
                OS.eventKind.KEY_DOWN, null, OS.eventKeyCode.ARROW_UP),
            arrowRightKeyPolicy = new KeyboardEventPolicy(UI.policyAction.PROPAGATE_BY_FOCUS,
                OS.eventKind.KEY_DOWN, null, OS.eventKeyCode.ARROW_RIGHT),
            arrowDownKeyPolicy = new KeyboardEventPolicy(UI.policyAction.PROPAGATE_BY_FOCUS,
                OS.eventKind.KEY_DOWN, null, OS.eventKeyCode.ARROW_DOWN),
            arrowLeftKeyPolicy = new KeyboardEventPolicy(UI.policyAction.PROPAGATE_BY_FOCUS,
                OS.eventKind.KEY_DOWN, null, OS.eventKeyCode.ARROW_LEFT);
            
        this.keyboardPolicyList = [
            backspaceKeyPolicy,
            deleteKeyPolicy,
            escapeKeyPolicy,
            arrowUpKeyPolicy, // Arrow keys for nudging points
            arrowRightKeyPolicy,
            arrowDownKeyPolicy,
            arrowLeftKeyPolicy
        ];
        
        this.selectHandler = "tool.pen.select";
        this.deselectHandler = "tool.pen.deselect";
        this.activationKey = shortcutUtil.GLOBAL.TOOLS.PEN;
        this.handleVectorMaskMode = true;
    };
    util.inherits(PenTool, Tool);

    /**
     * Handler for keydown events, installed when the tool is active.
     *
     * @param {CustomEvent} event
     */
    PenTool.prototype.onKeyDown = function (event) {
        var flux = this.getFlux(),
            toolStore = flux.store("tool"),
            detail = event.detail;
  
        if (toolStore.getVectorMode() && detail.keyCode === OS.eventKeyCode.ESCAPE) {
            flux.actions.tools.changeVectorMaskMode(false);
        }
    };

    module.exports = PenTool;
});
